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Longacre HD Battery & Alternator Disconnect Switch, no panel

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Brand: Longacre Racing Products

This NHRA-legal 4-terminal switch features an alternator interrupt circuit for cars with one-wire alternators. When the switch is turned off, power from the alternator is also cut off to prevent the alternator from feeding back into the ignition system. Wiring instructions are included. Accepts 3/8" ring terminals. Rated for 175 amps continuous current through the main terminals and 125 amps through the alternator circuit. Perfect for cars with high-output 1-wire alternators.

Wiring Diagram for Longacre 4-Terminal HD Battery and Alternator Disconnect Switch (PDF format)

We also offer a Master Battery Cutoff Switch with Alternator Protection (Part No. 4430) which re-routes the alternator output to ground, preventing damage to the alternator circuitry.

Part No.
Stock Status

Condition: New

In Stock